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Re: [RFC PATCH] xen/dm: arm: Introudce arm_inject_msi DM op
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Wed, 20 Dec 2023 09:13:15 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Wed, 20 Dec 2023 09:13:30 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHaMoIbfIb6LpTMIEGFPPk7JAqgfbCwp1oAgAAD9ICAAKqEgIAAjq6A
- Thread-topic: [RFC PATCH] xen/dm: arm: Introudce arm_inject_msi DM op
Hi,
On 20.12.23 02:42, Stefano Stabellini wrote:
> On Tue, 19 Dec 2023, Julien Grall wrote:
>>
>> But QEMU should really not need to implement a full ITS. What it needs is a
>> way to forward the MSI to Xen. That's it.
>
> I fully agree with Julien
>
>
>> Stefano, do you have any suggestion how to do this in QEMU?
>
> Yes, we just need something like hw/i386/xen/xen_apic.c but for ARM
It is exactly like xen_apic.c. All this implementation does is getting
the MSI messages and forwarding them to Xen using the DM op from this patch.
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